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Finding the Fourth Proportional to 70,718.01, 105,924.61 and 33,221.90

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Solution

The fourth proportional to 70,718.01, 105,924.61 and 33,221.90 is: 49,761.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,718.01 : 105,924.61 = 33,221.90 : x
  2. Step 2: Convert to fraction form
    70,718.01/105,924.61 = 33,221.90/x
  3. Step 3: Cross multiply
    70,718.01x = 105,924.61 × 33,221.90
  4. Step 4: Simplify right side
    70,718.01x = 3,519,016,511.47
  5. Step 5: Solve for x
    x = 3,519,016,511.47/70,718.01
  6. Step 6: Final answer
    x = 49,761.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.